INFINITI QX56 2010 Factory Service Manual

TRANSFER ASSEMBLYDLN-149
< DISASSEMBLY AND ASSEMBLY > [ATX14B]
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27. Remove the sun gear assembly from the planetary carrier assembly.
28. Remove the snap ring from the sun gear assembly using suit- able tool.
29. Remove the carrier bearing from the sun gear using Tools.
30. Remove the needle bearing from the sun gear using Tool.
31. Remove the metal bushing from the sun gear using Tools.
SDIA2147E
SDIA2148E
Tool number A: ST35300000 ( — ) B: ST30031000 ( — )
SDIA2149E
Tool number : ST33710000 ( — )
SDIA2354E
Tool number A: ST33710000 ( — )B: ST35325000 ( — )
C: KV381054S0 (J-34286)
SDIA2168E
Revision: April 20092010 QX56

DLN-150
< DISASSEMBLY AND ASSEMBLY >[ATX14B]
TRANSFER ASSEMBLY
Center Case
1. Remove the rear case assembly. Refer to
DLN-142, "Disassembly and Assembly".
2. Remove the front case assembly. Refer to DLN-142, "
Disassembly and Assembly".
3. Hold the front drive shaft with one hand and tap to remove the front drive shaft with the drive chain.
CAUTION:
Do not tap drive chain.
4. Remove the front drive shaft front bearing using Tools.
5. Remove the front drive shaft rear bearing using Tools.
6. Remove the neutral-4LO and ATP switches.
SMT900C
Tool number A: ST33052000 ( — ) B: ST30031000 ( — )
SDIA2106E
Tool number A: ST33052000 ( — )B: ST30031000 ( — )
SDIA2107E
SDIA2096E
Revision: April 20092010 QX56

TRANSFER ASSEMBLYDLN-151
< DISASSEMBLY AND ASSEMBLY > [ATX14B]
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7. Remove the bolts and main oil pump cover.
8. Remove the outer gear, inner gear and main oil pump housing from the center case.
9. Remove the seal ring from the main oil pump cover.
10. Remove the stem bleeder from the bleed hole.
11. Remove the snap ring and washer holder from the mainshaft.
SDIA2130E
SDIA2131E
SDIA2783E
SDIA2780E
SDIA2104E
Revision: April 20092010 QX56

DLN-152
< DISASSEMBLY AND ASSEMBLY >[ATX14B]
TRANSFER ASSEMBLY
12. Remove the C-rings from the mainshaft using suitable tool.
13. Set the center case on the press stand. Remove the mainshaft
from the center case.
14. Remove the snap ring from the mainshaft using suitable tool.
15. Remove the thrust needle bearing from the press flange.
16. Press the press flange until the snap ring is out of place using Tools.
SDIA2105E
SDIA2108E
SDIA2110E
SDIA2109E
Tool number A: ST22452000 (J-34335)
B: ST30911000 ( — )
C: KV31103300 ( — )
SDIA2111E
Revision: April 20092010 QX56

TRANSFER ASSEMBLYDLN-153
< DISASSEMBLY AND ASSEMBLY > [ATX14B]
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17. Remove the snap ring from the mainshaft using suitable tool.
18. Remove the press flange from the mainshaft.
19. Remove the return spring assembly from the clutch hub.
20. Remove each plate from the clutch drum.
21. Remove the snap ring from the mainshaft.
SDIA2112E
SMT910C
SMT911C
SMT912C
SDIA2113E
Revision: April 20092010 QX56

DLN-154
< DISASSEMBLY AND ASSEMBLY >[ATX14B]
TRANSFER ASSEMBLY
22. Remove the mainshaft from the clutch drum and clutch hub
using suitable tool.
23. Remove the needle bearing and spacer from the mainshaft.
24. Remove the snap ring from the clutch hub using suitable tool.
25. Remove the oil pressure check plug from the oil pressure check port.
26. Apply air gradually from the oil pressure check port, and remove the clutch piston assembly from the center case.
27. Remove the thrust needle bearing race from the clutch piston by hooking a edge into 3 notches of the thrust needle bearing race
using suitable tool.
CAUTION:
Do not damage clutch piston or thrust needle bearing race.
SMT914C
WDIA0101E
WDIA0227E
SDIA2116E
SDIA2118E
Revision: April 20092010 QX56

TRANSFER ASSEMBLYDLN-155
< DISASSEMBLY AND ASSEMBLY > [ATX14B]
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28. Remove the two D-rings from the clutch piston.
29. Remove the mainshaft rear bearing from the center case using Tool.
30. Remove the two bolts and oil strainer.
31. Remove the two O-rings from the oil strainer.
32. Remove the snap ring. Then push the connector assembly into the center case to remove the control valve assembly.
SDIA2781E
Tool number : KV38100300 (J-25523)
SDIA2129E
SDIA2119E
SDIA2782E
SDIA2122E
Revision: April 20092010 QX56

DLN-156
< DISASSEMBLY AND ASSEMBLY >[ATX14B]
TRANSFER ASSEMBLY
33. Remove the control valve assembly bolts.
34. Remove the control valve assembly.
CAUTION:
• Do not reuse any part that has been dropped or damaged.
• Make sure valve is assembled in the proper direction.
• Do not use a magnet because residual magnetism stays
during disassembly.
35. Remove the lip seals from the center case. CAUTION:
There are two kinds of lip seals (lip seal of large inner diam-
eter: 5 pieces, lip seal of small inner diameter: 2 pieces).
Confirm the position before disassembly.
36. Remove the transfer motor bolts and motor from the center case. Then remove the O-ring from the transfer motor.
37. Remove the sub oil pump cover bolts.
38. Thread two bolts (M4 x 0.8) into the holes of sub oil pump cover as shown, and pull out to remove the sub oil pump assembly.
SDIA2121E
SDIA2123E
SDIA2133E
SDIA2134E
SMT934C
Revision: April 20092010 QX56

TRANSFER ASSEMBLYDLN-157
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39. Remove the outer gear and inner gear from the sub oil pump housing.
40. Remove the oil filter bolts and oil filter. CAUTION:
• Do not damage center case and oil filter.
• Loosen bolts and detach oil filter evenly.
41. Remove the O-rings (1) from the oil filter (2).
42. Remove the oil filter stud from the oil filter.
43. Remove the O-ring from the oil filter stud.
Control Valve Assembly
1. Disassemble the control valve assembly with the following procedure. CAUTION:
• Do not reuse any part that has been dropped or damaged.
• Make sure valve is assembled in the proper direction.
• Do not use a magnet because residual magnetism stays during disassembly.
SDIA2135E
SDIA2136E
WDIA0285E
SDIA3180E
Revision: April 20092010 QX56

DLN-158
< DISASSEMBLY AND ASSEMBLY >[ATX14B]
TRANSFER ASSEMBLY
a. Remove all the bolts except for the two shown.
b. Remove the following from the control valve assembly:
• Clutch pressure solenoid valve
• Clutch pressure switch
• 2-4WD shift solenoid valve
• Line pressure switch
• Transfer fluid temperature sensor
c. Remove the O-rings from each solenoid valve, switch and termi- nal body.
d. Place the control valve with the lower body facing up. Remove the two bolts, and then remove the lower body and separator
plate from the upper body.
CAUTION:
Do not drop relief balls. Detach lower body carefully.
e. Make sure the reverse balls, relief balls, relief springs, accumu- lator pistons and valve springs are securely installed as shown,
and remove them.
f. Remove the retainer plates.
WDIA0198E
WDIA0199E
WDIA0200E
SDIA2126E
SDIA2127E
Revision: April 20092010 QX56